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rename env to AFL_IGNORE_PROBLEMS_COVERAGE

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vanhauser-thc
2023-04-25 16:47:37 +02:00
parent b96ba509d0
commit 21865c6224
5 changed files with 9 additions and 4 deletions
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3
docs/FAQ.md
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@ -229,7 +229,8 @@ If you find an interesting or important question missing, submit it via
If this is not a viable option, you can set `AFL_IGNORE_PROBLEMS=1` but then
the existing map will be used also for the newly loaded libraries, which
allows it to work, however, the efficiency of the fuzzing will be partially
degraded.
degraded. Note that there is additionally `AFL_IGNORE_PROBLEMS_COVERAGE` to
additionally tell AFL++ to ignore any coverage from the late loaded libaries.
</p></details>
<details>

3
docs/env_variables.md
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@ -406,7 +406,8 @@ checks or alter some of the more exotic semantics of the tool:
- If afl-fuzz encounters an incorrect fuzzing setup during a fuzzing session
(not at startup), it will terminate. If you do not want this, then you can
set `AFL_IGNORE_PROBLEMS`.
set `AFL_IGNORE_PROBLEMS`. If you additionally want to also ignore coverage
from late loaded libraries, you can set `AFL_IGNORE_PROBLEMS_COVERAGE`.
- When running in the `-M` or `-S` mode, setting `AFL_IMPORT_FIRST` causes the
fuzzer to import test cases from other instances before doing anything else.

1
include/envs.h
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@ -106,6 +106,7 @@ static char *afl_environment_variables[] = {
"AFL_HARDEN",
"AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES",
"AFL_IGNORE_PROBLEMS",
"AFL_IGNORE_PROBLEMS_COVERAGE",
"AFL_IGNORE_TIMEOUTS",
"AFL_IGNORE_UNKNOWN_ENVS",
"AFL_IMPORT_FIRST",

4
instrumentation/afl-compiler-rt.o.c
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@ -1565,13 +1565,13 @@ void __sanitizer_cov_trace_pc_guard_init(uint32_t *start, uint32_t *stop) {
"be able to fuzz them or LD_PRELOAD to run outside of afl-fuzz.\n"
"To ignore this set AFL_IGNORE_PROBLEMS=1 but this will lead to "
"ambiguous coverage data.\n"
"In addition, you can set AFL_LLVM_IGNORE_PROBLEMS_COVERAGE=1 to "
"In addition, you can set AFL_IGNORE_PROBLEMS_COVERAGE=1 to "
"ignore the additional coverage instead (use with caution!).\n");
abort();
} else {
u8 ignore_dso_after_fs = !!getenv("AFL_LLVM_IGNORE_PROBLEMS_COVERAGE");
u8 ignore_dso_after_fs = !!getenv("AFL_IGNORE_PROBLEMS_COVERAGE");
if (__afl_debug && ignore_dso_after_fs) {
fprintf(stderr, "Ignoring coverage from dynamically loaded code\n");

2
src/afl-fuzz.c
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@ -259,6 +259,8 @@ static void usage(u8 *argv0, int more_help) {
"AFL_HANG_TMOUT: override timeout value (in milliseconds)\n"
"AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES: don't warn about core dump handlers\n"
"AFL_IGNORE_PROBLEMS: do not abort fuzzing if an incorrect setup is detected\n"
"AFL_IGNORE_PROBLEMS_COVERAGE: if set in addition to AFL_IGNORE_PROBLEMS - also\n
" ignore those libs for coverage\n"
"AFL_IGNORE_TIMEOUTS: do not process or save any timeouts\n"
"AFL_IGNORE_UNKNOWN_ENVS: don't warn on unknown env vars\n"
"AFL_IMPORT_FIRST: sync and import test cases from other fuzzer instances first\n"